Improvement in gates



PATENT OEEICE.

PETER s. CRAWFORD, OE UNION, ILLINOIs.

IMPROVEMENT IN GATES.

Specification forming part of Letters Patent No. 117,263, dated July 25, 1871.

To all whom it may concern:

Be it known that I, PETER S. CRAWFORD, of Union, in the county of McHenry and State of Illinois, have invented certain Improvements in Gates, of which the following is a specication:

The object of this invention is to improve the gate patented to me March 2l, 1871; and it consists in the construction of the gate and its relation to a-nd arrangement with the actuating and operating devices.

In the drawing, Figure l is a side view of the gate and its accessions with the gate closed. Fig. 2 is a side view of the gate when the gate is open, and Fig. 3 is a transverse view of the gate when partially open.

H is a transverse sill, framed or ttin g between upright posts B B. AA are intermedia-te posts, standing upon the transverse sideA and supported by the braces a c and b4 b4. B B are two upright posts, into which the ends of transverse sill A are framed and are connected to intermediate posts Al by the braces b4. C C C C are the four pieces that form the frame ofthe gate. C is a lon gitudinal rail, formed with a central angle where tWo right lines meet, the inclination bein g upward from the center each way to the outer ends. C is the guide-rail of the gate, and goes from the center of the gate in a horizontal direction to a distance on the side at which the gate opens and is guided in its reciprocations by guide-rollers d d on post D. c c are two braces that support the guide-rail C", and are attached to the upright piece of the gate and to the extreme outer end of the guide-rail. D is a stop-post, against which the end of the gate abuts when closed. D is an intermediate post, andD is the post on which the rollers d d are pivoted and between which the guide-rail C{ of the gate passes. E E are two iron plates or pieces of boards, one on either side of the gate, and between which the long inclined rails ee are locked together and receive the guiderail C and its combination Cf between them; while e e e e are radial pickets or bars, with their approximate ends between the pieces E, and their outer ends are fast to the bottom rail of the gate or uprights. The plates or pieces E are iirmly riveted or bolted together, and thus become the means of iirmly holding the gate, through its several parts, firmly together, and will, by this construction, securely keep the gate from swagging. The gate freely slides between ner ends extending to near the inner sides of the intermediate posts, and at their extreme inner ends are staples, to which are attached links b b, and these to arms b/ b that are pivoted to and turn freely on their pivots on the inner faces .of )osts A Al while their extreme outer ends are connected to link or rod bf, which is hooked into an eye, 0, that is in the center of the longitudinal guide-rail C at a point vertically above the greatest depression in said guide-rail C. The pivot-levers b b in position are parallel with the roadway, so that when a person approaches the closed gate the outer end of the lever will be within reach, and by taking hold of the cord or pull-rope a and pulling the outer end of lever b down it raises the end that is attached to arms b and causes them to rise, and as they rise the rod bf is made by its position to draw the gate open, and as it opens and is raised by reason of bringing the inclined lower edge of the guiderail at its lowest depression upon the roller c, when the action of applying force to raise the arms b ceases, and the gate, by the momentum attained, will pass over the extreme point of depression on the under side ofthe said guide-rail, when its specific gravity, acting with the upwardly-inclined lower edge of the guide-rail, will cause the gate to open to its fullest extent, and the arms b/ have made a half revolution.

To close the gate, the same operation is gone through with of pulling down on the cord a', reversing the rotation of the arms b, and consequently closing the gate. In this coi'istruction and arrangement of part of the gate less movement of the lever b is required to force the gate open or to close it than in the patent cited, for the reason that the arm b is connected to the guide-rail in a direction diii'erent from what is shown in the patent, and thereby making the Operation not only more certain, but with less movement of the hand of the operator and withI more despatch, as the point of connection behence the gate is forced in a horizontal direc- 2. The plates E E, inclined or angular rails e, tion more positively and to a greater distance by radial pickets e e', guide-rad C,' rail C", braces the saine movement or rise ofthe arm b than it' c c and frame C, when constructed and arranged connected as is shown in the patent. together as described, to form the gate7 as shown.

Having thus described my invention, what I claim7 and desire to secure by Letters Patent, PETER S. CRAWFORD. [L. s l 1sl. The pvoted lever b, connecting-link bf, ro- Witnesses: tating arm bf, link 12,and eye c,\vl1en arranged J. B. BABCOCK, with relation to the inclined guide-rail C of gate F. FILLMoRE.

O, as herein described. 

